How to delete a specific footage from a NX server (immediately)?

Answered

Permanently deleted user

January 20, 2020 23:12

I need to delete recorded footage from Nx server at some intervals due to security polices and operational convenience.

My situation is very similar to the following post (but not Nx1): 

https://support.networkoptix.com/hc/en-us/community/posts/115008369068-Remove-record-files-of-NX1

Currently I delete recordings by setting the archive length in a camera setting page from auto to 1 day min/max as a work around. With this method, however, I cannot remove footage which is recorded within 24 hours.

Is there anybody who knows how to delete footage immediately (using APIs or SDK or whatever)?

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  Norman

  • Network Optix team

  February 03, 2020 10:03

  If you can search for the first and last (chronological) directories you want to delete, then you can use find:

  find . -newer first -not -newer last -type d

  And if the output suits you, go for the delete

  find . -newer first -not -newer last -type d -print0 | xargs -0 rmdir

  or with explicit date stamps:

  find . -newermt "2010-03-31 0300" -not -newermt "2010-03-31 0310" -type d

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  Permanently deleted user

  February 06, 2020 03:56 Edited

  Hi Norman,

  Thank you for your helpful answer!

  The way which you suggested results in archive database corruption. To fix it, we need to perform "Rebuild Archive Index." However, I am afraid whether this operation is acceptable or not in a production environment in terms of sever workload and robustness.

  Any idea?

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  Norman

  • Network Optix team

  February 06, 2020 08:36

  Hi Tomoaki,

  Unfortunately, I do not have a suggestion for a better workflow in this situation. 
  In general surveillance systems are made to record data, not to remove data. ;-) 

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